Optical-Electronic Properties of Carbon-Nanotubes Based Transparent Conducting Films

Kuan-Ru Chen, Hsiu-Feng Yeh, Hung-Chih Chen, Ta-Jo Liu, Shu-Jiuan Huang, Ping-Yao Wu, Carlos Tiu

Department of Chemical Engineering, Monash University, HHMelbourneHH, Australia.
Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Chinese Taipei.
Material and Chemical Laboratory, Industrial Technology & Research Institute, Hsinchu, Chinese Taipei.

DOI: 10.4236/aces.2013.31013                

Abstract

Three coating methods (slot, dip and blade coatings) were used separately to coat a well-dispersed single-wall carbonnanotube (SWCNT) solution on polyethylene terephthalate (PET) film, and the resulting optical and electronic properties were measured and compared. It was found that the sheet resistance and the transparency of the SWCNT coated film decreased as the coating speed increased for dip and blade coatings, but were independent of the coating speed for slot coating. All three coating methods were able to produce transparent conductive film with transparency above 85% and sheet resistance close to 1000 ohm/sq. For industrial production, the slot die coating method appears to be more suitable in terms of high coating speed and uniformity of optical and electronic properties.

Keywords

Carbon Nanotubes; Transparent Conductive Film; Dip Coating; Slot Die Coating; Blade Coating; Sheet Resistance; Transparency

Conflicts of Interest

The authors declare no conflicts of interest.

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